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Systematic Investigation of High‐Sensitivity Luminescent Sensing for Polyoxometalates and Iron(III) by MOFs Assembled with a New Resorcin[4]arene‐Functionalized Tetracarboxylate
Author(s) -
Zhang ShuaiTong,
Yang Jin,
Wu Hua,
Liu YingYing,
Ma JianFang
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201501976
Subject(s) - isostructural , luminescence , chemistry , tetra , metal organic framework , fluorescence , aqueous solution , crystallography , materials science , organic chemistry , crystal structure , medicinal chemistry , physics , optoelectronics , quantum mechanics , adsorption
A new family of resorcin[4]arene‐based metal–organic frameworks (MOFs), namely, [Eu(HL)(DMF)(H 2 O) 2 ] ⋅ 3 H 2 O ( 1 ), [Tb(HL)(DMF)(H 2 O) 2 ] 3 H 2 O ( 2 ), [Cd 4 (L) 2 (DMF) 4 (H 2 O) 2 ] 3 H 2 O ( 3 ) and [Zn 3 (HL) 2 (H 2 O) 2 ] 2 DMF ⋅ 7 H 2 O ( 4 ), have been constructed from a new resorcin[4]arene‐functionalized tetracarboxylic acid (H 4 L=2,8,14,20‐tetra‐ethyl‐6,12,18,24‐tetra‐methoxy‐4,10,16,22‐tetra‐carboxy‐methoxy‐calix[4]arene). Isostructural 1 and 2 exhibit charming 1D motifs built with the cup‐like HL 3− anions and rare earth cations. Compounds 3 and 4 show a unique sandwich‐based 2D layer and a fascinating 3D framework, respectively. Remarkably, compounds 1 and 2 display intensive red and green emissions triggered by the efficient antenna effect of organic ligands under UV light. More importantly, systematic luminescence studies demonstrate that Ln‐MOFs 1 and 2 , as efficient multifunctional fluorescent materials, show highly selective and sensitive sensing of Fe 3+ , polyoxometalates (POMs), and acetone, which represents a rare example of a sensor for quantitatively detecting three different types of analytes. This is also an exceedingly rare example of Fe 3+ and POMs detection in aqueous solutions employing resorcin[4]arene‐based luminescent Ln‐MOFs. Furthermore, the possible mechanism of the sensing properties is deduced.